Thinking graphically: Connecting vision and cognition during graph comprehension
Journal of Experimental Psychology Applied (2008) - Comment
pubmed: 18377165  doi: 10.1037/1076-898x.14.1.36  issn: 1076-898x  issn: 1939-2192 

Raj M. Ratwani, J. Gregory Trafton, Deborah A. Boehm-Davis